21454720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4789}}^1$

素因数の和:4815

約数の個数: 64

約数和(自身を含む): 58629600

約数和(自身を除く): 37174880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4789, 9578, 19156, 23945, 33523, 38312, 47890, 67046, 76624, 95780, 134092, 153248, 167615, 191560, 268184, 306496, 335230, 383120, 536368, 612992, 670460, 766240, 1072736, 1340920, 1532480, 2145472, 2681840, 3064960, 4290944, 5363680, 10727360, 21454720]

約数ペア:

[(1, 21454720), (2, 10727360), (4, 5363680), (5, 4290944), (7, 3064960), (8, 2681840), (10, 2145472), (14, 1532480), (16, 1340920), (20, 1072736), (28, 766240), (32, 670460), (35, 612992), (40, 536368), (56, 383120), (64, 335230), (70, 306496), (80, 268184), (112, 191560), (128, 167615), (140, 153248), (160, 134092), (224, 95780), (280, 76624), (320, 67046), (448, 47890), (560, 38312), (640, 33523), (896, 23945), (1120, 19156), (2240, 9578), (4480, 4789)]